[hibernate-issues] [Hibernate-JIRA] Commented: (HV-364) @Email does not fail if tilda (~) or forward slash (/) are in the domain

[Anthony Gerrard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HV-364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=38351#action_38351 ] 

Anthony Gerrard commented on HV-364:
------------------------------------

I think the specification is ambiguous and contradictory.  It says:
  "An addr-spec is a specific Internet identifier that contains a 
   locally interpreted string followed by the at-sign character ("@", 
   ASCII value 64) followed by an Internet domain."
...
  "The domain portion identifies the point to which the mail is
   delivered. In the dot-atom form, this is interpreted as an Internet
   domain name (either a host name or a mail exchanger name) as
   described in [STD3, STD13, STD14].  In the domain-literal form, the
   domain is interpreted as the literal Internet address of the
   particular host."

It links to standards that exclude tilda and slash (and all other special characters aside from period and hyphen) from the domain portion.  This contradicts the ABNF version which allows any character in a dot atom.

I the light of this contradiction shouldn't @Email pick the most useful (and most valid) alternative?  Both the examples given here are based on something our users have actually typed in the last month.

> @Email does not fail if tilda (~) or forward slash (/) are in the domain
> ------------------------------------------------------------------------
>
>                 Key: HV-364
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-364
>             Project: Hibernate Validator
>          Issue Type: Bug
>          Components: validators
>    Affects Versions: 4.1.0.Final
>         Environment: 4.1.0
>            Reporter: Anthony Gerrard
>            Assignee: Hardy Ferentschik
>
> The following email addresses do not result in constraint validations.  I believe they should
> test@~mydomain.com
> test at mydomain/com
> Looking at the mail specification it does seem to allow these email addresses but they're not compatible with javax.mail.internet.InternetAddress or indeed most email servers.

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